How to disable IPv6 in Raspbian [WORKING]

I had connection problems with my Raspberry Pi, it dropped connection over IPv4 periodically.

My solution was to disable IPv6, and the Pi’s network connections (over IPv4) went stable!

To check if you have any IPv6 address, run:

$ ifconfig


Check for “inet6”, see picture above.

To disable IPv6:

  1. Edit “/etc/sysctl.conf”:
    $ sudo nano /etc/sysctl.conf
    Add this to the end:
    net.ipv6.conf.all.disable_ipv6=1
    net.ipv6.conf.default.disable_ipv6=1
    net.ipv6.conf.lo.disable_ipv6=1
    net.ipv6.conf.eth0.disable_ipv6 = 1
    Save and close the file.

  2. Edit “/etc/rc.local”:
    $ sudo nano /etc/rc.local
    Add this to the end (but before “exit 0”):
    service procps reload
    Save and close the file.

  3. Reboot

  4. Check with “ifconfig” if the IPv6 address has disappeared.
    $ ifconfig
    See my result in picture below, “inet6” is missing:

Done!

Enjoy! 🙂

9 thoughts on “How to disable IPv6 in Raspbian [WORKING]

  1. DON’T use this if you use RNDIS usb connection to a PI ZERO..
    Flashing new card now to get it working again..

    1. Thank you for feedback!
      I have used this on a RPi 3B+

      If anything goes wrong you should be able to remove the SD-Card and mount it in a Linux computer to edit the files. And then put the card back to the pi.

  2. Wow. Shouldn’t have done this.

    This isn’t letting me login via ssh after making changes.

  3. I have a Raspberry Pi 1 Modell B+ using Raspberry Pi OS (32-bit) Lite and this worked like a charm, donno what the guys over there did. I also still can connect to my pi via ssh.

  4. Hi,
    thanks for the article.
    But i have some problem with it.

    I started another program with http-server within rc.local and if i reload “procps” via “service procps reload” the previous started programm is dropped.

    1. You do not have to reload the “procps”-service in the “rc.local”. It is working without this.
      After a reboot your RPi do not have an ipv6 address any more. I have tried it.

  5. @Steve from 2020-08-10 at 22:06

    You do not have to reload the “procps”-service in the “rc.local”. It is working without this.
    After a reboot your RPi do not have an ipv6 address any more. I have tried it.

    @Christoffer
    Thank you very much!

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